Acne and Related Disorders Practice Questions

Q: Rhinophyma is a type of?

Acne rosacea. **Explanation:** **Rhinophyma** is a clinical subtype of **Acne Rosacea** (specifically Stage III or Phymatous Rosacea). It is characterized by the hypertrophy of sebaceous glands and fibrosis of the connective tissue, leading to a bulbous, irregular, and "cobblestone" enlargement of the nose. It predominantly affects elderly males. **Why the other options are incorrect:** * **Acne Vulgaris:** While both involve sebaceous glands, acne vulgaris is characterized by comedones (blackheads/whiteheads), which are strictly absent in rosacea. Rosacea is primarily a vascular and inflammatory disorder. * **Fungal Infection:** Rhinophyma is a structural hypertrophic change, not an infectious process. While some theories link rosacea to *Demodex folliculorum* (a mite), it is not a fungal etiology. * **Hematoma:** A hematoma is a localized collection of blood outside blood vessels. While the rhinophymatous nose may appear erythematous (red) due to telangiectasia, the pathology is glandular hyperplasia, not hemorrhage. **High-Yield Clinical Pearls for NEET-PG:** * **Phymatous Rosacea:** Can affect other areas: **Metophyma** (forehead), **Otophyma** (ears), **Blepharophyma** (eyelids), and **Gnathophyma** (chin). * **Demographics:** Rosacea is more common in females, but **Rhinophyma** is significantly more common in **males**. * **Triggers:** Alcohol, spicy foods, and sunlight can exacerbate rosacea (flushing), but alcohol is *not* the direct cause of rhinophyma (contrary to the "rum nose" myth). * **Treatment:** Early rosacea is treated with topical Metronidazole or Brimonidine; advanced Rhinophyma usually requires surgical debulking or CO2 laser resurfacing.

Q: A 35-year-old woman presents with a history of erythematous papulopustular lesions on the face, with diffuse redness on her cheeks. What is the most likely diagnosis?

Rosacea. **Explanation:** The clinical presentation of erythematous papulopustular lesions associated with diffuse facial redness (erythema) in a 35-year-old woman is classic for **Rosacea**. **1. Why Rosacea is Correct:** Rosacea is a chronic inflammatory dermatosis primarily affecting the "flush areas" of the face (cheeks, nose, chin, and forehead). The key differentiating feature from acne is the **absence of comedones** and the presence of **persistent erythema and telangiectasia**. It typically affects middle-aged adults (30–50 years), particularly women. The papulopustular subtype (Subtype 2) mimics acne but occurs on a background of chronic redness. **2. Why Other Options are Incorrect:** * **Acne Vulgaris:** While it presents with papules and pustules, the hallmark lesion is the **comedone** (blackhead/whitehead). It typically begins in puberty and lacks the diffuse, persistent background erythema seen in rosacea. * **Atopic Dermatitis:** This presents with intense pruritus, xerosis (dryness), and eczematous plaques, usually on flexural surfaces. Facial involvement is more common in infants than in 35-year-old adults. * **Seborrheic Dermatitis:** Characterized by erythematous plaques with **greasy, yellowish scales** in seborrheic areas (nasolabial folds, eyebrows, scalp). It does not typically present with pustules. **High-Yield Clinical Pearls for NEET-PG:** * **Triggers:** Spicy food, alcohol, sunlight, and hot beverages (vasodilation). * **Ocular Rosacea:** Up to 50% of patients have eye involvement (blepharitis, conjunctivitis). * **Rhinophyma:** Hypertrophy of sebaceous glands leading to a bulbous nose (more common in men). * **Treatment:** Topical **Metronidazole** is the drug of choice for mild cases; oral Doxycycline is used for systemic therapy. Avoid topical steroids as they can worsen the condition (Steroid-induced Rosacea).

Q: Physical examination on a 65-year-old man with mild congestive heart failure reveals varicose veins, ankle edema, and inflammation of much of the skin near the ankles of both legs. The affected skin exhibits edema, erythema, mild scaling, and brown discoloration. The edges of skin involvement are poorly defined. On one ankle, a one centimeter diameter ulcerated area is seen within the erythematous area. The patient says that his leg lesions look much worse than they feel. Which of the following is the most likely diagnosis?

Stasis dermatitis. **Explanation:** **Stasis Dermatitis** is the correct diagnosis based on the patient’s age, underlying medical history, and clinical presentation. The fundamental pathology is **chronic venous insufficiency**. In this patient, congestive heart failure and varicose veins lead to venous hypertension. This causes fluid and red blood cells to leak into the dermis. The breakdown of hemoglobin results in **hemosiderin deposition**, which explains the characteristic **brown discoloration** (brawny edema). The clinical triad of edema, erythema/scaling, and ulceration near the medial malleolus is classic for this condition. **Why the other options are incorrect:** * **Atopic Dermatitis:** Typically presents in childhood with intense pruritus and involvement of flexural surfaces (popliteal/antecubital fossae). It does not cause brawny discoloration or venous ulcers. * **Lichen Simplex Chronicus (LSC):** This is a result of chronic scratching/rubbing. It presents as localized, well-defined, leathery (lichenified) plaques. While it can occur on the lower legs, it lacks the systemic signs of venous congestion. * **Seborrheic Dermatitis:** Characterized by greasy, yellowish scales in "seborrheic" areas (scalp, eyebrows, nasolabial folds). It does not affect the lower extremities or cause ulceration. **NEET-PG High-Yield Pearls:** * **Location:** Most common on the medial malleolus. * **Lipodermatosclerosis:** A chronic stage where the skin becomes "woody" and indurated, giving the leg an **"inverted champagne bottle"** appearance. * **Management:** The primary treatment is addressing the underlying venous hypertension via **compression stockings** and leg elevation. * **Complication:** Stasis dermatitis is a major risk factor for developing **allergic contact dermatitis** due to the frequent use of topical medications on a compromised skin barrier.

Q: A farmer presents with a lesion on the leg. Which of the following is the most likely diagnosis?

Tuberculosis verrucosa cutis. ***Tuberculosis verrucosa cutis*** - Occurs through **inoculation** in individuals with high immunity to TB, commonly in **farmers** and **laborers** exposed to contaminated soil. - Presents as a **verrucous plaque** on extremities, typically the **legs or hands**, with characteristic **warty appearance**. *Verruca vulgaris* - Caused by **human papillomavirus (HPV)** and lacks specific **occupational association** with farming activities. - Usually appears as **discrete papules** with **black dots** (thrombosed capillaries), not large verrucous plaques. *Mycetoma* - Characterized by the **triad** of **tumefaction**, **sinuses**, and **grains** discharged from sinus tracts. - Involves **deeper subcutaneous tissues** and bone, presenting with significant **swelling** and **deformity**. *Lichen planus hypertrophicus* - Shows **violaceous polygonal papules** that are **pruritic** and typically affect **flexural surfaces**. - Lacks **occupational predisposition** and has different **morphological characteristics** compared to verrucous lesions.

Q: A 58-year-old man complains of an enlarged, pitted nose, and a facial rash that flushes in response to drinking hot liquids or alcohol. The rash is on both cheeks and is red and flushed in appearance, with some telangiectasias and small papules. Which of the following is the most likely diagnosis?

rosacea. **Explanation:** The clinical presentation of facial flushing triggered by **hot liquids and alcohol**, combined with **telangiectasias, papules**, and an **enlarged, pitted nose (rhinophyma)**, is classic for **Rosacea**. Rosacea is a chronic inflammatory dermatosis primarily affecting the "flush areas" of the face. The patient exhibits features of two subtypes: 1. **Erythematotelangiectatic Rosacea:** Characterized by flushing and persistent central facial erythema with telangiectasias. 2. **Phymatous Rosacea:** Characterized by skin thickening and irregular surface nodularities, most commonly affecting the nose (rhinophyma). This subtype is predominantly seen in men. **Why other options are incorrect:** * **Acne Vulgaris:** While it presents with papules, it is characterized by the presence of **comedones** (absent here) and typically affects a younger age group. It does not cause flushing or rhinophyma. * **Pemphigus:** An autoimmune blistering disorder. It presents with flaccid bullae and erosions, not flushing or phymatous changes. * **Psoriasis:** Presents as well-demarcated erythematous plaques with silvery-white scales, typically on extensor surfaces. Facial involvement is less common and does not involve flushing triggers. **NEET-PG High-Yield Pearls:** * **Triggers:** Sunlight, spicy food, alcohol, and emotional stress. * **Ocular Rosacea:** Up to 50% of patients have eye involvement (blepharitis, conjunctivitis). * **Management:** * General: Sun protection and trigger avoidance. * Topical: **Metronidazole** (drug of choice), Ivermectin, or Azelaic acid. * Systemic: Oral Doxycycline (sub-antimicrobial doses). * Rhinophyma: Treated with CO2 laser or surgical debulking.

Q: The proportion of which of the acids is increased in acne comedones?

Palmitic acid. In acne pathogenesis, alterations in the lipid composition of sebum play a critical role in the formation of comedones (follicular plugging). **Why Palmitic Acid is Correct:** The development of acne is associated with a specific shift in the fatty acid profile of sebum. Research indicates that in patients with acne, there is an **increase** in the levels of **Palmitic acid** (a saturated fatty acid) and a decrease in linoleic acid. High levels of palmitic acid contribute to the proinflammatory environment and stimulate the expression of inflammatory cytokines (like IL-1α) in keratinocytes, which promotes follicular hyperkeratosis and the formation of the microcomedo. **Analysis of Incorrect Options:** * **Linoleic acid (D):** This is the most important distractor. In acne patients, levels of linoleic acid are significantly **decreased** (hyposeborrheic state). Low linoleic acid leads to impaired skin barrier function and follicular hyperkeratosis. * **Linolenic acid (A):** While an essential fatty acid, it does not show the same diagnostic increase in comedones as palmitic acid. * **Acetic acid (C):** This is a short-chain fatty acid not primarily involved in the lipid pathophysiology of sebum or comedogenesis. **High-Yield Clinical Pearls for NEET-PG:** * **The "Linoleic Acid Theory":** Low levels of linoleic acid lead to "dilutional hypolinoleate," which triggers the comedogenic process. * **Sebum Composition:** Sebum is composed of Triglycerides (approx. 40%), Wax esters (25%), Squalene (12%), and Cholesterol. * **Role of *C. acnes*:** This bacterium produces **lipases** that break down triglycerides into **Free Fatty Acids (FFAs)**, which are highly irritating to the follicular wall and promote inflammation.

Q: Rhinophyma is characterized by which of the following?

Sebaceous gland hypertrophy. **Explanation:** **Rhinophyma** is a severe, late-stage manifestation of **Phymatous Rosacea**. It is characterized by a bulbous, irregular enlargement of the nose, primarily due to the **hypertrophy and hyperplasia of sebaceous glands**, along with associated fibrosis and connective tissue proliferation. 1. **Why Option D is correct:** In the phymatous stage of rosacea, chronic inflammation leads to the overgrowth of the pilosebaceous units. This results in thickened skin, enlarged follicular orifices, and a "potato-like" appearance of the nose. Histologically, there is a marked increase in the size and number of sebaceous glands. 2. **Why other options are incorrect:** * **Option A:** Septal deviation is a structural/anatomical deformity of the nasal cartilage and bone, unrelated to the cutaneous pathology of rosacea. * **Option B & C:** While there is soft tissue hypertrophy, it specifically involves the sebaceous glands and dermal collagen, not the sweat (eccrine/apocrine) or mucous glands. **High-Yield Clinical Pearls for NEET-PG:** * **Demographics:** Unlike classic rosacea (more common in females), Rhinophyma is significantly more common in **males** (ratio ~20:1). * **Common Sites:** While the nose is most common, other "phyma" types include **Gnathophyma** (chin), **Metophyma** (forehead), and **Otophyma** (ears). * **Clinical Sign:** The "Squeezing Sign"—pressure on the rhinophyma may express a foul-smelling, pasty sebum (seborrhea). * **Treatment:** Medical therapy (Isotretinoin) is effective in early stages, but established Rhinophyma usually requires **surgical intervention** (CO2 laser resurfacing or electrosurgery) to debulk the tissue.

Q: Treatment of acne vulgaris may include all except?

Androgens. **Explanation:** The pathogenesis of **Acne Vulgaris** is primarily driven by four factors: follicular hyperkeratinization, *Cutibacterium acnes* colonization, inflammation, and **excess sebum production**. Sebum production is directly stimulated by **Androgens** (specifically Dihydrotestosterone acting on sebaceous glands). Therefore, administering androgens would exacerbate acne rather than treat it, making it the correct "except" choice. **Analysis of Options:** * **Androgens (Correct Answer):** These increase the size and activity of sebaceous glands. Conditions with high androgen levels (e.g., PCOS, adrenal tumors) are classic causes of refractory acne. * **Oestrogens:** These are used in female patients (often via Oral Contraceptive Pills) to suppress ovarian androgen production and increase Sex Hormone Binding Globulin (SHBG), which lowers free testosterone, thereby improving acne. * **UV Light:** Phototherapy (Blue/Red light) has an antibacterial effect on *C. acnes* and anti-inflammatory properties. While not a first-line treatment, it is a recognized adjuvant modality. * **Cryotherapy:** Slush cryotherapy (using CO2 or Liquid Nitrogen) is an older but recognized physical therapy used to induce superficial peeling and reduce inflammation in nodulocystic acne. **NEET-PG High-Yield Pearls:** * **First-line for mild acne:** Topical retinoids + Benzoyl Peroxide. * **Drug of choice for severe/nodulocystic acne:** Oral Isotretinoin (Side effect: Teratogenicity—requires contraception). * **Hormonal therapy:** Indicated in females with hyperandrogenism (PCOS) or cyclical flares; includes Spironolactone (anti-androgen) and OCPs. * **Dietary link:** High glycemic index foods and dairy are associated with acne flares.

Q: Hidradenitis suppurativa is commonly found in which of the following locations?

All of the above. **Explanation:** **Hidradenitis Suppurativa (HS)**, also known as **Acne Inversa**, is a chronic inflammatory skin condition primarily affecting the **apocrine gland-bearing areas** of the body. The pathogenesis involves follicular occlusion of the pilosebaceous unit, leading to abscess formation, sinus tracts, and scarring. * **Axilla:** This is the most common site of involvement in both males and females. * **Circumanal/Anogenital region:** This is a frequent site, particularly in males, often presenting with painful nodules and foul-smelling discharge. * **Scalp:** While less common than the axilla or groin, HS can involve the scalp (often associated with the **Follicular Occlusion Tetrad**). Since all three locations are rich in apocrine glands or prone to follicular occlusion, **Option D (All of the above)** is the correct answer. **Clinical Pearls for NEET-PG:** 1. **Follicular Occlusion Tetrad:** Includes (1) Hidradenitis Suppurativa, (2) Acne Conglobata, (3) Dissecting Cellulitis of the scalp, and (4) Pilonidal Sinus. 2. **Hurley Staging System:** Used to grade severity: * *Stage I:* Abscess formation without sinus tracts or scarring. * *Stage II:* Recurrent abscesses with sinus tracts and scarring. * *Stage III:* Diffuse involvement with interconnected tracts and abscesses across an entire area. 3. **Risk Factors:** Strongly associated with **smoking** and **obesity**. 4. **Treatment:** First-line medical management includes topical/oral antibiotics (Clindamycin + Rifampicin). For severe cases, Adalimumab (TNF-α inhibitor) or wide surgical excision is required.

Question 1

Rhinophyma is a type of?

Accepted Answer

Acne rosacea

Answer

Acne vulgaris

Answer

Fungal infection

Answer

Hematoma

Question 2

A 35-year-old woman presents with a history of erythematous papulopustular lesions on the face, with diffuse redness on her cheeks. What is the most likely diagnosis?

Accepted Answer

Rosacea

Answer

Acne vulgaris

Answer

Atopic dermatitis

Answer

Seborrheic dermatitis

Question 3

Physical examination on a 65-year-old man with mild congestive heart failure reveals varicose veins, ankle edema, and inflammation of much of the skin near the ankles of both legs. The affected skin exhibits edema, erythema, mild scaling, and brown discoloration. The edges of skin involvement are poorly defined. On one ankle, a one centimeter diameter ulcerated area is seen within the erythematous area. The patient says that his leg lesions look much worse than they feel. Which of the following is the most likely diagnosis?

Accepted Answer

Stasis dermatitis

Answer

Atopic dermatitis

Answer

Lichen simplex chronicus

Answer

Seborrheic dermatitis

Question 4

A farmer presents with a lesion on the leg. Which of the following is the most likely diagnosis?

Accepted Answer

Tuberculosis verrucosa cutis

Answer

Verruca vulgaris

Answer

Mycetoma

Answer

Lichen planus hypertrophicus

Question 5

A 58-year-old man complains of an enlarged, pitted nose, and a facial rash that flushes in response to drinking hot liquids or alcohol. The rash is on both cheeks and is red and flushed in appearance, with some telangiectasias and small papules. Which of the following is the most likely diagnosis?

Accepted Answer

rosacea

Answer

acne vulgaris

Answer

pemphigus

Answer

psoriasis

Question 6

The proportion of which of the acids is increased in acne comedones?

Accepted Answer

Palmitic acid

Answer

Linolenic acid

Answer

Acetic acid

Answer

Linoleic acid

Question 7

Rhinophyma is characterized by which of the following?

Accepted Answer

Sebaceous gland hypertrophy

Answer

Septal deviation of the nose

Answer

Sweat gland hypertrophy

Answer

Mucous gland hypertrophy

Question 8

Rhinophyma is a complication of which of the following?

Accepted Answer

Glandular form of acne rosacea

Answer

Form of acne vulgaris

Answer

Affects the scalp

Answer

A form of dermatofibroma

Question 9

Treatment of acne vulgaris may include all except?

Accepted Answer

Androgens

Answer

Cryotherapy

Answer

Oestrogens

Answer

UV light

Question 10

Hidradenitis suppurativa is commonly found in which of the following locations?

Accepted Answer

All of the above

Answer

Axilla

Answer

Circumanal region

Answer

Scalp

Acne and Related Disorders — MCQs

Acne and Related Disorders — MCQs

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